2017 Hyundai Tucson: fuel pump failure

Filed Jul 19, 2026 · Engine, Fuel system · CO

The Core Symptoms: "The high-pressure fuel pump is leaking internally. Raw gasoline is flooding into the engine oil crankcase, causing severe fuel dilution. The engine air filter is physically soaked in raw fuel and smells strongly of gasoline." My engine is always extremely hot after I have only went 15 mins away from home. Sometimes takes over two hours to cool down. The Safety Risk: "When attempting to accelerate, the vehicle experiences severe fuel starvation, causing the engine to bog down and act like it is going to stall in the middle of traffic, creating a severe crash hazard. Additionally, there is a loud 'popping' sound/mini-backfire upon turning the vehicle off due to unburnt fuel vapors, presenting a high risk of an underhood engine fire. I have only 83,000 miles on my car.

Filed Aug 7, 2025 · Engine, Transmission · WI

This unresolved issue has created serious safety risks. On two separate occasions, my vehicle lost power while crossing the Leo Frigo Bridge in Green Bay—an extremely dangerous scenario for both my family and other drivers. Most recently, within just ~40 miles of picking up the vehicle from service, the issue recurred. The service department reported finding oil on the ignition coils—symptoms consistent with known and documented warranty concerns such as: Valve cover gasket leaks Spark plug tube seal failure High-pressure fuel pump gasket leaks The vehicle has been brought multiple times to a certified Hyundai dealership for recurring problems including power loss, poor engine performance, and excessive oil consumption. Despite these repeated service visits, the underlying issue has not been properly addressed. I have now been informed that I am responsible for diagnostic charges—even though the vehicle is covered under the TXXM Engine Warranty Extension / Powertrain Limited Warranty due to known oil consumption-related defects.

Filed Jun 6, 2024 · Fuel system · NM

6 June 2024 - Sudden severe loss of engine power while driving, presenting potentially serious safety hazard in traffic situations. Check engine light illuminated during incident (not blinking). Driver was able to pull to side of road and shut off car, then after 2 attempts car re-cranked. Driver was able to crank and drive 5 miles home. Check engine code P1233 stored & retrieved by scanner, indicating fuel pump issue -- (potentially a low pressure fuel pump leak similar to Hyundai TSB 23-FL-004H?), which may present fire hazard from leaking fuel. Visual inspection of high pressure pump in engine bay - no noticed problems. Visual / olfactory inspection of area around gas tank - no noticed problems or smell of fuel, no indication of leaking. Briefly cranked engine, no noticeable leaks or sounds. No check engine light (though P1233 stored).

Filed Jun 7, 2023 · Acceleration, Electrical · TX

Car has been hesitating to start this last week, Friday 6/2/23 warning lights came on & air conditioning stopped working. My local Hyundai shop is booked 2 weeks out so I already have an appt for 6/13/23. But on 6/2 I barely made it to a shop close to my home for a diagnostic check. Code P1111 was stored, cleared & retested. It's for fuel pump, circuit was tested & no faults were found & test driven with no return of code. Picked up car on Monday 6/5 with no issues. Tuesday car hesitated to start, 3rd time it started with no issue & no warning light/s. Today 6/7 around noon while I was making a turn the car completely shut off without warning. I've also noted that the oil level is always low, I have to check & put in oil at least every 2 weeks but there doesn't seem to be an oil leak. Also from stop to go at a light for example the car hesitates and then jerks forward. In the past I was told at a Hyundai facility that this is normal because of the dual clutch or something to that fact. The incident today was scary as there were a lot of cars behind me and cars coming towards me. The attached pic of warning lights was from Friday, 6/2/23.

Filed Feb 10, 2021 · Brakes, Electrical · PA

I purchased 2017 tucson brand new at roughly 22k my engine seized and the 3rd connecting rod failed. After engine replacement I continued to have problems with rear driver side brake light continuously going out, bulb is not out but wiring scorched and bulb somehow continuously becomes loose. I have replaced front headlights repeatedly with the driver front shattering in housing. I have also replaced calipers and have gone through 7 sets of rotors. At roughly 60000 I noticed I was running out of oil in between every 3000 mile oil change. Continued to bring back to dealer for repair s . I have complained multiple times about hesitation when pulling out from stop and engine knocking. Multiple oil pan reseal gaskets replaced fuel pump replaced, oil always all over engine. At 110k my engine failed a second time with hyundai denying all claims. Originally said they would reimburse me for rental but when they emailed me letter for 'goodwill ' reimbursement it was a release from liability waiver if I took their 'goodwill ' . I have informed them of electric issues and how I feel unsafe with new recall and fire possibility and they informed me as long as no warning light is on it should not be an issue. I tried to trade vehicle in and no one would take my trade, it's 3 years old and worth nothing. Hyundai response was vehicles don't hold their value like they used to. I am disgusted with their dismissive customer care, 2 engines in a vehicle 3 years old and they insist there is nothing wrong with their product.